Center valve.



PATENTED MAY 23,1905. 1. REDMAN. CENTER VALVE.

APPLIOATION FILED NOV. 18, 1904.

2 SHEETSSHEET -1.

No. 790,813. PATENTE D MAY 23, 1905.

' T; REDMAN. CENTER VALVE.

APPLICATION FILED NOV. 18', 1904,

2 SHEETS-SHEET 2.

. Q I \M UNITED STATES Patented May 23, 1905.

PATENT .OFFICE.

CENTER ,VALVE'.

SPEGIFIGATION forming part of Letters Patent No. 7 90,313, dated May 23,1905.

Application filed November 18, 1904.. Serial No. 233,343.

tion of gas; and it consists in arranging and combining the severalparts comprising the valve in such a manner that the valve is applicablefor controlling the flow of gas, so as to pass through the whole seriesof gas-purifying boxes or through some of the series of boxes-with whichthe valve is connected and to finally deliver .the volume of gas to thetrunk-mainor other range of pipes, accomplished by a combination ofparts arranged so .as to dispense with the seal-pot well or with what issometimes called the siphonsealed port ion of such valves foundnecessary with centerv valves when constructed in the manner as hithertoIn describing my invention in detail reference is made to theaccompanying drawings, in which Figure 1 represents a plan of the outeror fixed casing of a center valve constructed in accordance with myinvention, showing thebranches for making connections with the trunkmain or supply range of pipes and with top branches for making pipeconnections with the inlet and outlet openings of gas-purifying boxes.Fig. 2 is a section through line a b. Fig. 3 is a similar plan to Fig.1, but provided with the center or rotating portion of valve placed inposition. Fig. 4 is a sectional plan through line 0 d. Fig. 5 is adetached sectional plan of a portion of the center or rotating part ofthe valve, along with a portion of the outer or fixed casing, drawn toan enlarged scale; and Fig 6, a detached detail through line w w of Fig.5, showing the link connectlons between the spindle and sleeve adaptedfor operating the wing valve-plates, also drawn to an enlarged scale.

In carrying out my invention I form an outer casing 1 with branches 2and 3 for at tachment to what is commonly termed the trunk main line ofpipes arranged in the ordinary manner. The branch 2 communicates with anannular space 4- within the bottom portion of said casing. The otherbranch, 3, extends internally inpipe form and terminates with an opening3 in the center.

9 The fixed or outer casing 1 is provided with top branches 5, 6, 7, 8,9, 10, 11, and 12 for pipe connections thereto. Each pair of branchesfollowing in numerical order is connected to the inlet and outlet pipes,respectively, of a gas-purifying box. 1 The center valve shown havingeight top branches numbered as above issuitable for attachment tofourpurifying-boxes and controlling the flow of gas through same- Theattachments between branches and purifying-boxes are made by pipeconnections in the ordinary manner. Within the outer casing 1 are twoflanged ring-supports 13 and 14, leaving a concentric opening 15 betweensame. These supports are machined, asis also the internal circumferenceat 1 of casing 1, and upon the said. flanged ring-supports rests aninternal circular casing 16, machined to fit the circular opening withinthe circumference 1 of outer casing and adapted to be rotated therein.

The internal circular rotary casing is divided by vanes 17 into a numberof compartments suitably covered by a top plate, the number ofcompartments corresponding to the pairs of top branches 5 to 12 andattached purifying-boxes.

One of the before-mentioned compartments has an opening 18, formedthrough the bottom plate of casing, communicating with the annular space4 below. This compartment is divided from the next by a perforated vaneprepared with a flat valve-facing on each side at F F for the receptionof wing-plate valves 19 and 20, one of which is mounted on each side ofsaid vane for the purpose of controlling the gas-current passing throughthe valve.

The wing valve-plates are pivoted at one end, and each is connected by alink 21 to its respective lever 22 or 22, one of which is secured tospindle 23 and the other to sleeve 24, incasing a portion of saidspindle, both extending through the cover-plate of internal casing 16,both spindle and sleeve terminating with a square or othersuitably-shaped end adapted for engagement with a key-lever foroperating the wing valve plates coupled thereto.

By turning the circular casing 16 into a .definite position, such asshown by Fig. 5,

with the wing valve-plates 19 and 20 in contact with the valve-facings FF, the gas on passing from annular space 4 through opening 18 in bottomplate into the compartment with which branch 5 is definitely connectedis allowed to flow from said compartment through branch 5 and ordinarypipe connections to a purifying-box, through which it passes in theordinary manner, returning to the interior of rotary casing 16 throughbranch 6 into the compartment with which branch 7 forms a part, the gasescaping through branch 7 to another purifier, from which it returns tocenter valve through branch 8. The flow of gas is continued in the samemanner through the rest of purifying-boxes connected with the remainingtop branches 9 to 12 and finally escapes through branch 12 alongthoroughfare T to center opening 3", communicating with branch 3, whichmay be connected to the trunk main or other range of pipes, as is thecase with center valves of the ordinary description.

When the wing-plate valves 1 9 and 20 are in the position as shown anddescribed in conneetion with Fig. 5, gas is allowed to flow through thewhole series of four purifyingboXes; but any one box of the series offour may be cut off and the gas passed through the remaining threepurifying-boxes only. This is accomplished by moving the wing-platevalves 19 and 20 to the position shown by Fig. 4:. In this case the gasstill entering casing 16 through opening 18 from annular space 4 isdiverted from branch 5 and controlled so as to fiow through branch 7.The gas continuing its course through the remainder of purifying-boxesin rotation finally escapes through branch 12 to the center opening 3,connected with branch 8.

It will be obvious from the foregoing description that by turning theinternal casing 16 into another position, so that the opening 18 isopposite any of the top outflow branches indicated by the odd numerals,and placing the wing-plate valves 19 and 20 in the position shown byFig. 4 any of the purifying-boxes may be shut off from connection withthe center valve for the purpose of examination, recharging, repairs, orthe like and the remaining three boxes kept in use for purifyingpurposes, the gas always finally returning through one of the topbranches having an even reference-number into the thoroughfare T,communicating with beforementioned opening 3.

By constructing center valves in the manner described the gasiscontrolled and passed through the valve in a way so as to render siphonsealing unnecessary, the valve being so arranged as to allow the gas toflow direct through selected compartments and purifyingboXes or throughthe whole or a portion of the valve.

What I claim as my invention is 1. In center valves a fixed outer casinghaving an annular space and concentric opening combined with a rotarycasing divided by vanes into compartments and provided with wing-platevalves adapted, to direct the flow of gas substantially as described.

2. In center valves a fixed casing with inlet into an annular space aconcentric opening at top of same an inlet from annular space into acompartment of rotary-casing wing-plate valves and perforated vanecombined with unperforated vanes and outlet-pipe substantially asdescribed.

3. In center valves a fixed casing adapted to deliver gas to an openingthrough an upper casing in all positions of rotation, wing-plate valvesadapted to be operated and combined with said opening, perforated vaneand with outlet and inlet branches of fixed casing substantially asshown and described.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

THOMAS NEDA IAN.

Witness es:

RALPH REDMAN, J OIIN GILL.

